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Fall 2007  Astr 10L  Lab 13  
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"...Living on a planet in orbit around a solitary
sun gives us a distorted view of the comsos; we 
tend to think that single stars are the norm and 
that double stars must be somewhat odd.  For stars 
like the sun, this turns out to be far from true."
--Alan P. Boss, Scientific American, 10/1995


Sirius AB (L'Observatoire de Paris)

Binary Stars Interactive Module (*.swf)

LAB 13: MASS OF BINARY STARS [*.pdf]
Current events quiz [10 min]
Study guide: [1], [2], [3]
SurveyMonkey.com pre-lab: M, Tu, W, Th

"Astronomy Laboratory Learning Survey" (for education research) [20 min]
Answer on separate scantron, do not write on questionnaire sheet
Choose best answer, leave blank if you don't understand
5.0 points [Enrichment Activity 1] 

Kepler's third law: lone stars
Kepler's third law: binary stars, combined mass
The teeter-totter law: binary stars, individual masses

In-class lab work (*.mov)
     Find and sit in your groups
     Work cooperatively as a group
     Fill out worksheets individually
     Finished?  Turn in worksheets as a group
     One worksheet is randomly selected for group grading
     
ANNOUNCEMENTS
**THIS LAB IS THE LAST LAB**
**ALL PROJECTS/ASSIGNMENTS DUE THIS WEEK**